Geneva — A shortage of cholera vaccines has forced a temporary shift to a one-dose strategy, from the usual two, in campaigns to fight a swelling number of outbreaks, the World Health Organization said Wednesday. The United Nations health agency said the "strained global supply of cholera vaccines" had pushed the International Coordinating Group (ICG), which manages emergency supplies of vaccines, to suspend the two-dose regimen. "The pivot in strategy will allow for the doses to be used in more countries, at a time of unprecedented rise in cholera outbreaks worldwide," WHO said in a statement. Cholera is an acute diarrheal infection in the small intestine causing sometimes fatal dehydration. It is generally contracted from food or water contaminated with vibrio cholera bacteria. WHO chief Tedros Adhanom Ghebreyesus pointed out to reporters that "29 countries have reported outbreaks this year, including 13 countries that did not have outbreaks last year." That compares with the fewer t